Differences between Old fold and Young fold mountains:
| Old fold mountains | Young fold mountains |
|---|---|
| Old fold mountains were formed several hundred million years ago. | Young fold mountains were formed a few million years ago. |
| They have gentle slopes and low rounded peaks, since they have been worn down by agents of denudation such as rivers and glaciers over a long period of time. | They generally consist of parallel ranges with steep slopes and tall peaks which remain snow-covered due to the high elevation. |
| Examples- The Aravallis and Urals | Examples- The Alps and Himalayas |